PRODUCTS
- Microphone
- Preamplifier integrated microphone
Preamplifier integrated microphone
TYPE 7146NX
(TYPE 1)
There are two type of ACO microphones : preamplifier integrated microphone and condenser microphone.
Preamplifier integrated microphone compatible with IEPE can be connected directly to FFT analyzer or other analyzers, enabling to measure with highly accurate resolution at low costs.
Long-term stability realized by accelerated aging process under 360℃ enables to use under 100℃ or higher.
Condenser microphone is to be used for measurements of sound presser level with high resolution over wide frequency range.
Varieties of microphone diaphragm diameter 1,1/2, 1/4, 1/6, 1/8 inch and corresponding frequency characteristics would best support measurements of various purposes.
The diameters and electroacoustic characteristics of these measurement microphones comply with the international standard IEC 61094-4:1995.
It also complies with the microphone specifications required by IEC 61672, which is an important standard for measurement systems such as Class 1/ Class 2 sound level meters.
TYPE 1 and TYPE 2 indicates compliance with IEC 61672 Class 1 and Class 2, respectively.
| Wide frequency range Wide range of measurement from low-frequency to ultrasonic frequency(1Hz～200kHz) is possible. Wide dynamic range Measurement of high sound pressure level up to 170dB is possible. Preamplifier integrated microphone It is also possible to connect directly to analyzer by using BNC cable. For high sensitivity requirement If high sensitivity is required, Type 7146/4152N20 offers 500 mV/Pa and it can measure from low sound pressure level.. It can be directly connected to equipment such as FFT Analyzer. and is easy to use. |
 |
| Type | TYPE 7146NX(TYPE1) |
| Appearance *When the image is clicked, it is displayed by the zoon. | |
| Frequency Response Characteristic | Free-Field |
| Nominal Diameter | 1/2 inch |
| Release voltage | -20dB (100.0mV/Pa) |
| Pressure Sensitivity (Included preamplifier) | -21dB±1dB re 1V/Pa (89.1mV/Pa) |
| Polarization voltage | 0V |
| Frequency Characteristics | 20Hz～20kHz |
| Maximum sound pressure level | 120dB |
| Self-noise level | 12dB(A) |
| Temperature coefficient | 0.009dB/℃ or less |
| Power supply and voltage | DC15～28V |
| Constant current | 0.5～4mA |
| Output Impedance | Approx.100Ω |
| Connector | BNC connector |
| TEDS | noncompliant |
| Operating Temperature・ Range of Humidity | -10℃～+50℃・90%RH (no condensation) |
| Storage Temperature・ Range of Humidity | 40% or less (at room temperature) |
| Cable | BNC Cable (3m) |
| Outline size | Φ13.2×77.6 |
| Weight | 41g |
 |
